Pollinator decline + bee colony collapse

Layer 3 — Biologyin the Entomology subtree

Goulson 2015 / Sánchez-Bayo 2019 ~75% global insect biomass decline. CCD (2006-) + Varroa-mite + neonicotinoid + habitat-loss. ~$300B/yr pollination-services. Bridges to L5 environmental.